Question

Zener diode is used for

• A. amplification
• B. rectification
• C. stabilisation
• D. all of the above

Answer 1

Answer: (C)

stabilisation

A zener diode is always operated in its reverse biased condition. A voltage regulator circuit can be designed using a zener diode to maintain a constant DC output voltage across the load in spite of variations in the input voltage or changes in the load current. The zener voltage regulator consists of a current limiting resistor $R_S$ connected in series with the input voltage $V_S$ with the zener diode connected in parallel with the load RL in this reverse biased condition.Hence we can say that ,zener diode is used for stabilization.